Nu

Its story

Nu Horologii harbours a debris disk: a double ring of cold dust at 56 kelvin surrounding the star, a vestige of the process by which rocky bodies might have formed. The inner ring orbits at about 96 astronomical units, the outer ring extends to 410. It is a white A2 star 165 light-years away, in the southern constellation of the Pendulum Clock, drawn by Lacaille in honour of the astronomer's instrument.